A small update about the gear I've got my hands on in a past half year or so.
compatibility list first.
Kinetik Laboratories Xmatrix passive matrix mixer with three inputs/outputs. Very nice gadget for routing input signal(s) to multiple outputs and/or for feedback insanity. Some will regard the limited inputs/outputs as downside, but so far I have made it quite well with only three ins & outs.
Sorry, no soundfiles this time. Maybe one of these days...